...容 12岁年龄组检查牙龈出血、牙结石，35～44、65～74岁2个年龄组检查牙龈出血、牙结石、牙周袋深度（periodontal pocket depth，PPD）、附着丧失（loss of attachment，LOA）。
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Results Two weeks after treatment, gingival index(GI) of nano silver tourmaline composite group was decreased significantly( P <0.01), but the periodontal pocket depth didn't have any change.
结果使用纳米银-托玛琳复合材料的受试者牙龈指数显著降低（P <0 .0 1 ） ，但对牙周袋的改善无效果。
Probing pocket depth and clinical attachment loss, two markers of periodontal disease, were also measured.
两个牙周疾病的主要标志物，即牙周袋深度和临床附着丧失程度，也同时被测量。
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